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How are the lung's alveoli adapted for efficient diffusion?

The alveoli are like small sacks present at the base of the lung, and are the site of exchange between the air we breathe and our blood. This exchange occurs by the process of diffusion, for which alveoli ar...
EG
Answered by Eleanor G. • Biology tutor
2857 Views

Explain how HIV infects the body once it has entered the host

HIV is a retrovirus that infects specifically T helper cells / CD4 cells in the body.the glycoprotein (envelope protein) on the surface of the virus is able to bind to receptors on CD4 cells, and causes the ...
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2690 Views

give two features of DNA that is important for DNA replication

complementary base pairing - new strand can be synthesised based on the base sequence on the template strand, so that the resulting strand synthesised is identical to the coding strand. hydrogen bonds betwee...
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2915 Views

Describe the structure of the nephron and the role of each component

The renal corpuscle is composed of the glomerulus and Bowman's capsule. Filtration occurs at the glomerulus, and filtrate is collected at the Bowman's capsule. A basement membrane lies between the glomerulus...
CS
Answered by Charlotte S. • Biology tutor
8352 Views

Suggest how a wood mouse maintains a constant body temperature when in a cold environment?

Thermoreceptors in the skin and hypothalamus detect low temperature and send impulses to the heat gain centre inthe thermoregulatory center in the hypothalamus. This heat gain centre sends out impulses to th...
AS
Answered by Akshi S. • Biology tutor
3625 Views